FLUID PRESSURE-CONTROLLED ACTUATING DEVICE, ESPECIALLY A BRAKE BOOSTER SERVO MOTOR,申请号DE19843460192-传众专利搜索

FLUID PRESSURE-CONTROLLED ACTUATING DEVICE, ESPECIALLY A BRAKE BOOSTER SERVO MOTOR

申请公布号：DE3460192(D1)

申请号：DE19843460192

申请日期：1984.03.07

申请公布日期：1986.07.10

申请人：

BENDIX FRANCE

发明人：TANGUY, CHRISTIAN

分类号：B60T13/40;B60T13/44;(IPC1-7):B60T13/24

主分类号：B60T13/40

摘要：1. Fluid pressure-controlled actuating device, in particular a brake booster servo-motor, comprising a casing (2) defining an internal cavity divided in first (9) and second (10) chambers by a movable wall structure (7) forming a piston, coupled to an output member (39) and including a control valve means (29) actuated from outside by an input member (1) selectively to create an actuating pressure differential between the two chambers to displace thereby the movable wall structure from a rest position, a flexible conduit (50) for feeding fluid to the valve means, which conduit is connected to a fluid pressure source and disposed in one of said chambers, and a helical return spring (50) biasing the movable wall structure towards its rest position, characterized in that the return spring is comprised of a resilient tube (50) forming said flexible conduit for feeding pressure fluid to the valve means (29).